PDB Statistics: Growth in Number of Unique Protein Sequences in Released PDB Structures (Cumulative) at Identity 95%

This chart shows the annual and cumulative numbers of protein sequences in released PDB structures. The chart can be viewed for a few different levels of sequence identity since the beginning of the PDB archive. The cumulative bars represent the growth in unique protein sequences (number of polymeric entities) across history. The yearly bars (dark blue) tell how many new protein sequences were added in a certain year.

Note: The total number of sequence clusters in the statistics table is linked to the sequence cluster group search result page. There is a default precision threshold in calculating the numbers for performance balance. So the statistics count may have a slight discrepancy compared to the actual non-redundant group search result when the result count approaches or goes above 10,000. The group search result page provides an accurate count. The statistics page provides the trend.

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Sequence cluster level:

YearNumber of New Protein SequencesTotal Number of Protein Sequences
19761313
19771326
1978329
1979635
1980338
1981947
19821865
19831176
19841187
19851097
19869106
198710116
198823139
198945184
199047231
199151282
199265347
1993228575
19944691,044
19953681,412
19964001,812
19975742,386
19987743,160
19999754,135
200010725,207
200111176,324
200211837,507
200316749,181
2004229211,473
2005256814,041
2006291416,955
2007329520,250
2008304923,299
2009316326,462
2010319929,661
2011301632,677
2012316435,841
2013346639,307
2014429143,598
2015361047,208
2016412251,330
2017448155,811
2018424760,058
2019475764,815
2020567570,490
2021512375,613
2022462780,240